A liquid-in-glass thermometer has a range from −20∘C-20^\circ\text{C}−20∘C to 150∘C150^\circ\text{C}150∘C.
What are the standard fixed-point temperatures used when calibrating this thermometer to define the Celsius scale?
−20∘C-20^\circ\text{C}−20∘C and 0∘C0^\circ\text{C}0∘C
−20∘C-20^\circ\text{C}−20∘C and 150∘C150^\circ\text{C}150∘C
0∘C0^\circ\text{C}0∘C and 100∘C100^\circ\text{C}100∘C
0∘C0^\circ\text{C}0∘C and 150∘C150^\circ\text{C}150∘C
528 exam-style questions on CIE IGCSE Physics 2.2 Thermal properties and temperature, covering 2.2.1 Thermal expansion of solids, liquids and gases, 2.2.2a Internal energy and temperature, 2.2.2b Specific heat capacity, 2.2.3a Melting, boiling, condensation and solidification, 2.2.3b Evaporation, and 2.2.3c Cooling by evaporation. Each one has a worked solution and a mark scheme showing where the marks go.